jquery - iframe access denied in IE on some pages

前端未结
关注
 5  1451
深忆病人 2020-12-05 15:36
I\'m the author of printThis, a jquery plugin for printing.
https://github.com/jasonday/printThis
I have a user that has brought up an issue, that I have bee
5条回答
星月不相逢 (楼主)
2020-12-05 16:10
Issue is due to IE not inheriting the parent document.domain.
Unfortunately, once you get into this murky area, it took some specific hacks to get this to work properly.
Basically doing a check for if document.domain is being explicitly set and the browser is IE.
Full updated plugin:
https://github.com/jasonday/printThis
(function ($) {
    var opt;
    $.fn.printThis = function (options) {
        opt = $.extend({}, $.fn.printThis.defaults, options);
        var $element = this instanceof jQuery ? this : $(this);

            var strFrameName = "printThis-" + (new Date()).getTime();

            if(window.location.hostname !== document.domain && navigator.userAgent.match(/msie/i)){
                // Ugly IE hacks due to IE not inheriting document.domain from parent
                // checks if document.domain is set by comparing the host name against document.domain
                var iframeSrc = "javascript:document.write(\"\")";
                var printI= document.createElement('iframe');
                printI.name = "printIframe";
                printI.id = strFrameName;
                printI.className = "MSIE";
                document.body.appendChild(printI);
                printI.src = iframeSrc;

            } else {
                 // other browsers inherit document.domain, and IE works if document.domain is not explicitly set
                var $frame = $("");
                $frame.appendTo("body");
            }


            var $iframe = $("#" + strFrameName);

            // show frame if in debug mode
            if (!opt.debug) $iframe.css({
                position: "absolute",
                width: "0px",
                height: "0px",
                left: "-600px",
                top: "-600px"
            });


        // $iframe.ready() and $iframe.load were inconsistent between browsers    
        setTimeout ( function () {

            var $doc = $iframe.contents();

            // import page stylesheets
            if (opt.importCSS) $("link[rel=stylesheet]").each(function () {
                var href = $(this).attr("href");
                if (href) {
                    var media = $(this).attr("media") || "all";
                    $doc.find("head").append("<link type='text/css' rel='stylesheet' href='" + href + "' media='" + media + "'>")
                }
            });

            //add title to iframe
            if (opt.pageTitle) $doc.find("head").append("<title>" + opt.pageTitle + "</title>");

            // import additional stylesheet
            if (opt.loadCSS) $doc.find("head").append("<link type='text/css' rel='stylesheet' href='" + opt.loadCSS + "'>");

            // grab $.selector as container
            if (opt.printContainer) $doc.find("body").append($element.outer());

            // otherwise just print interior elements of container
            else $element.each(function () {
                $doc.find("body").append($(this).html())
            });

            if($iframe.hasClass("MSIE")){
                // check if the iframe was created with the ugly hack
                // and perform another ugly hack out of neccessity
                window.frames["printIframe"].focus();
                setTimeout(function () {
                   $doc.find("head").append("<script>  window.print(); </script>");
                }, 500 );
            } else {
                // proper method
                $iframe[0].contentWindow.focus();
                $iframe[0].contentWindow.print();  
            }

             //remove iframe after print
            if (!opt.debug) {
                setTimeout(function () {
                    $iframe.remove();
                }, 1000);
            }


        }, 333 );

    };

    // defaults
    $.fn.printThis.defaults = {
        debug: false,           // show the iframe for debugging
        importCSS: true,        // import parent page css
        printContainer: true,   // print outer container/$.selector
        loadCSS: "",            // load an additional css file
        pageTitle: ""           // add title to print page
    };

    // $.selector container
    jQuery.fn.outer = function () {
        return $($("<div></div>").html(this.clone())).html()
    }
})(jQuery);
</code></pre>
    </p>
             <div class="appendcontent">
                                                        </div>
            </div>
            <div class="jieda-reply">
              <span class="jieda-zan button_agree" type="zan" data-id='860911'>
                <i class="iconfont icon-zan"></i>
                <em>0</em>
              </span>
                   <span type="reply" class="showpinglun" data-id="860911">
                <i class="iconfont icon-svgmoban53"></i>
               讨论(0)
              </span>
                                                  
              
              <div class="jieda-admin">
                          
             
       
          
              </div>
                                       <div class="noreplaytext bb">
<center><div>   <a href="https://www.e-learn.cn/qa/q-251434.html">  查看其它5个回答
</a>
</div></center>
</div>            </div>
                         <div class="comments-mod "  style="display: none; float:none;padding-top:10px;" id="comment_860911">
                    <div class="areabox clearfix">

<form class="layui-form" action="">
               
            <div class="layui-form-item">
    <label class="layui-form-label" style="padding-left:0px;width:60px;">发布评论:</label>
    <div class="layui-input-block" style="margin-left:90px;">
         <input type="text" placeholder="不少于5个字" AUTOCOMPLETE="off" class="comment-input layui-input" name="content" />
                        <input type='hidden' value='0' name='replyauthor' />
    </div>
    <div class="mar-t10"><span class="fr layui-btn layui-btn-sm addhuidapinglun" data-id="860911">提交评论 </span></div>
  </div>
  
</form>
                    </div>
                    <hr>
                    <ul class="my-comments-list nav">
                        <li class="loading">
                        <img src='https://www.e-learn.cn/qa/static/css/default/loading.gif' align='absmiddle' />
                        &nbsp;加载中...
                        </li>
                    </ul>
                </div>
          </li>
                              			
        </ul>
        
        <div class="layui-form layui-form-pane">
          <form id="huidaform"  name="answerForm"  method="post">
            
            <div class="layui-form-item layui-form-text">
              <a name="comment"></a>
              <div class="layui-input-block">
            
    
<script type="text/javascript" src="https://www.e-learn.cn/qa/static/js/neweditor/ueditor.config.js"></script>
<script type="text/javascript" src="https://www.e-learn.cn/qa/static/js/neweditor/ueditor.all.js"></script>
<script type="text/plain" id="editor"  name="content"  style="width:100%;height:200px;"></script>                                 
<script type="text/javascript">
                                 var isueditor=1;
            var editor = UE.getEditor('editor',{
                //这里可以选择自己需要的工具按钮名称,此处仅选择如下五个
                toolbars:[['source','fullscreen',  '|', 'undo', 'redo', '|', 'bold', 'italic', 'underline', 'fontborder', 'strikethrough', 'removeformat', 'formatmatch', 'autotypeset', 'blockquote', 'pasteplain', '|', 'forecolor', 'backcolor', 'insertorderedlist', 'insertunorderedlist', 'selectall', 'cleardoc', '|', 'rowspacingtop', 'rowspacingbottom', 'lineheight', '|', 'customstyle', 'paragraph', 'fontfamily', 'fontsize', '|', 'indent', '|', 'justifyleft', 'justifycenter', 'justifyright', 'justifyjustify', '|', 'link', 'unlink', 'anchor', '|', 'simpleupload', 'insertimage', 'scrawl', 'insertvideo', 'attachment', 'map', 'insertcode', '|', 'horizontal', '|', 'preview', 'searchreplace', 'drafts']],
            
                initialContent:'',
                //关闭字数统计
                wordCount:false,
                zIndex:2,
                //关闭elementPath
                elementPathEnabled:false,
                //默认的编辑区域高度
                initialFrameHeight:250
                //更多其他参数，请参考ueditor.config.js中的配置项
                //更多其他参数，请参考ueditor.config.js中的配置项
            });
                        editor.ready(function() {
            	editor.setDisabled();
            	});
                            $("#editor").find("*").css("max-width","362px");
        </script>              </div>
            </div>
                          
    

        
         <div class="layui-form-item">
                <label for="L_vercode" class="layui-form-label">验证码</label>
                <div class="layui-input-inline">
                  <input type="text"  id="code" name="code"   value="" required lay-verify="required" placeholder="图片验证码" autocomplete="off" class="layui-input">
                </div>
                <div class="layui-form-mid">
                  <span style="color: #c00;"><img class="hand" src="https://www.e-learn.cn/qa/user/code.html" onclick="javascript:updatecode();" id="verifycode"><a class="changecode"  href="javascript:updatecode();">&nbsp;看不清?</a></span>
                </div>
              </div>
                                  <div class="layui-form-item">
                    <input type="hidden" value="251434" id="ans_qid" name="qid">
   <input type="hidden" id="tokenkey" name="tokenkey" value=''/>
                <input type="hidden" value="jquery - iframe access denied in IE on some pages" id="ans_title" name="title"> 
             
              <div class="layui-btn    layui-btn-disabled"  id="ajaxsubmitasnwer" >提交回复</div>
            </div>
          </form>
        </div>
      </div>
      <input type="hidden" value="251434" id="adopt_qid"	name="qid" /> 
      <input type="hidden" id="adopt_answer" value="0"	name="aid" />
    </div>
    <div class="layui-col-md4">
          
 <!-- 热门讨论问题 -->
     
 <dl class="fly-panel fly-list-one">
        <dt class="fly-panel-title">热议问题</dt>
            <!-- 本周热门讨论问题显示10条-->